You are here: Home
/ Publication Information
Title: Red-breasted nuthatches detect early increases in spruce budworm populations
Author: Crawford, Hewlette S.; Jennings, Daniel T.; Stone, Timothy L.;
Source: Northern Journal of Applied Forestry. 7(2): 81-83.
Publication Series: Scientific Journal (JRNL)
Description: Early suppression .of increasing spruce budworm populations is essential to prevent epidemics; however, early changes in budworm numbers are difficult to detect. An effective and inexpensive method to detect early increases is needed. Red-breasted nuthatches eat more spruce budworm larvae and pupae as the insect increases in number. We estimated the number of large larvae in Maine and northern New Hampshire forest stands in 1982 and 1983 by determining the number of these larvae in the birds' stomachs. When the mean number of spruce budworm in the stomach approached 1.7, budworm populations were nearing high density and could be expected to cause severe defoliation the following year.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
- This publication may be available in hard copy. Check the Northern Research Station web site to request a printed copy of this publication.
- Our on-line publications are scanned and captured using Adobe Acrobat. During the capture process some typographical errors may occur. Please contact Sharon Hobrla, firstname.lastname@example.org if you notice any errors which make this publication unusable.
XML: View XML
Crawford , Hewlette S.; Jennings, Daniel T.; Stone, Timothy L. 1990. Red-breasted nuthatches detect early increases in spruce budworm populations. Northern Journal of Applied Forestry. 7(2): 81-83.
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility